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    <title>Code coverage report for broadcast/src/broadcast.ts</title>
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        <h1><a href="..\..\index.html">All files</a> / <a href="index.html">broadcast/src</a> broadcast.ts</h1>
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            <div class='fl pad1y space-right2'>
                <span class="strong">80.53% </span>
                <span class="quiet">Statements</span>
                <span class='fraction'>153/190</span>
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            <div class='fl pad1y space-right2'>
                <span class="strong">71.54% </span>
                <span class="quiet">Branches</span>
                <span class='fraction'>88/123</span>
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            <div class='fl pad1y space-right2'>
                <span class="strong">89.47% </span>
                <span class="quiet">Functions</span>
                <span class='fraction'>17/19</span>
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            <div class='fl pad1y space-right2'>
                <span class="strong">81.98% </span>
                <span class="quiet">Lines</span>
                <span class='fraction'>141/172</span>
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            Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
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<a name='L351'></a><a href='#L351'>351</a>
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<a name='L355'></a><a href='#L355'>355</a>
<a name='L356'></a><a href='#L356'>356</a>
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<a name='L360'></a><a href='#L360'>360</a>
<a name='L361'></a><a href='#L361'>361</a>
<a name='L362'></a><a href='#L362'>362</a>
<a name='L363'></a><a href='#L363'>363</a>
<a name='L364'></a><a href='#L364'>364</a>
<a name='L365'></a><a href='#L365'>365</a>
<a name='L366'></a><a href='#L366'>366</a>
<a name='L367'></a><a href='#L367'>367</a>
<a name='L368'></a><a href='#L368'>368</a>
<a name='L369'></a><a href='#L369'>369</a>
<a name='L370'></a><a href='#L370'>370</a>
<a name='L371'></a><a href='#L371'>371</a>
<a name='L372'></a><a href='#L372'>372</a>
<a name='L373'></a><a href='#L373'>373</a>
<a name='L374'></a><a href='#L374'>374</a>
<a name='L375'></a><a href='#L375'>375</a>
<a name='L376'></a><a href='#L376'>376</a>
<a name='L377'></a><a href='#L377'>377</a>
<a name='L378'></a><a href='#L378'>378</a>
<a name='L379'></a><a href='#L379'>379</a>
<a name='L380'></a><a href='#L380'>380</a>
<a name='L381'></a><a href='#L381'>381</a>
<a name='L382'></a><a href='#L382'>382</a>
<a name='L383'></a><a href='#L383'>383</a>
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/**
 * @author AILHC 505126057@qq.com
 */
export class Broadcast&lt;MsgKeyType extends broadcast.IMsgKey, ValueType = any, ResultType = any&gt;
    implements broadcast.IBroadcast&lt;MsgKeyType, ValueType, ResultType&gt;{
&nbsp;
    public keys: { [key in keyof MsgKeyType]: MsgKeyType[key] };
    private _valueMap: { [key in keyof MsgKeyType]: any };
    private _handlerMap: { [key in keyof MsgKeyType]: broadcast.IListenerHandler | broadcast.IListenerHandler[] };
    private _stickHandlersMap: { [key in keyof MsgKeyType]: broadcast.IStickyHandler[] };
    protected _unuseHandlers: any[]
    constructor() {
        this.keys = new Proxy({} as any, {
            get: (target, p) =&gt; {
                return p;
            }
        })
        this._valueMap = {} as any;
        this._unuseHandlers = [];
    }
    //注册
    /**
     * 注册事件，可以注册多个
     * @param key 事件名
     * @param listener 监听回调
     * @param context 上下文
     * @param args 透传参数
     * @param once 是否监听一次
     * 
     */
    public on&lt;keyType extends keyof MsgKeyType = any&gt;(
        handler: keyType | broadcast.IListenerHandler&lt;keyType, ValueType, ResultType&gt; | broadcast.IListenerHandler&lt;keyType, ValueType, ResultType&gt;[],
        listener?: broadcast.Listener&lt;ValueType[broadcast.ToAnyIndexKey&lt;keyType, ValueType&gt;], ResultType[broadcast.ToAnyIndexKey&lt;keyType, ResultType&gt;]&gt;,
        context?: any,
        once?: boolean,
        args?: any[]
    ) {
        if (typeof handler === "string") {
            <span class="missing-if-branch" title="if path not taken" >I</span>if (!listener) <span class="cstat-no" title="statement not covered" >return;</span>
            this._addHandler(this._getHandler(handler, listener, context, once, args));
        } else {
            if (this._isArr(handler)) {
                const handlers: broadcast.IListenerHandler[] = handler as any;
                for (let i = 0; i &lt; handlers.length; i++) {
                    this._addHandler(handlers[i]);
                }
            } else {
                this._addHandler(handler as any);
            }
        }
&nbsp;
    }
    public has(key: keyof MsgKeyType) {
        return this._handlerMap &amp;&amp; !!this._handlerMap[key]
    }
&nbsp;
    public offAllByContext(context: any) {
        const handlerMap = this._handlerMap;
        <span class="missing-if-branch" title="else path not taken" >E</span>if (context &amp;&amp; handlerMap) {
            for (const key in handlerMap) {
                if (handlerMap[key]) {
                    this.off(key, null, context);
                }
&nbsp;
            }
        }
    }
    /**
     * 注销指定事件的所有监听
     * @param key 
     */
    public offAll(key?: keyof MsgKeyType) {
        <span class="missing-if-branch" title="if path not taken" >I</span>if (this._isStringNull(key)) {
<span class="cstat-no" title="statement not covered" >            return;</span>
        }
        const handlerMap = this._handlerMap;
        const stickyMap = this._stickHandlersMap;
        const valueMap = this._valueMap;
        <span class="missing-if-branch" title="if path not taken" >I</span>if (stickyMap) <span class="cstat-no" title="statement not covered" >stickyMap[key] = undefined;</span>
        <span class="missing-if-branch" title="else path not taken" >E</span>if (handlerMap) {
            const handlers: broadcast.IListenerHandler[] = handlerMap[key] as any;
            <span class="missing-if-branch" title="else path not taken" >E</span>if (this._isArr(handlers)) {
                for (let i = 0; i &lt; handlers.length; i++) {
                    this._recoverHandler(handlers[i]);
                }
            } else {
<span class="cstat-no" title="statement not covered" >                this._recoverHandler(handlers as any);</span>
            }
            handlerMap[key] = undefined
        }
        <span class="missing-if-branch" title="else path not taken" >E</span>if (valueMap) valueMap[key] = undefined;
&nbsp;
    }
    public off(key: keyof MsgKeyType, listener: broadcast.Listener, context?: any, onceOnly?: boolean) {
        if (this._isStringNull(key)) return;
        const handlerMap = this._handlerMap;
        if (!handlerMap || !handlerMap[key]) return this;
        let handler: broadcast.IListenerHandler = handlerMap[key] as any;
        <span class="missing-if-branch" title="else path not taken" >E</span>if (handler !== undefined &amp;&amp; handler !== null) {
            let handlers: broadcast.IListenerHandler[];
            if (!this._isArr(handler)) {
                if ((!context || handler.context === context)
                    &amp;&amp; (listener == null || handler.listener === listener)
                    &amp;&amp; (!onceOnly || <span class="branch-5 cbranch-no" title="branch not covered" >handler.once)</span>) {
                    this._recoverHandler(handler);
                    handlerMap[key] = undefined;
                }
            } else {
                handlers = handler as any;
                //倒序遍历做删除,将要删除的移到末尾，pop出去，时间复杂度O(1)
                let endIndex = handlers.length - 1;
                for (let i = endIndex; i &gt;= 0; i--) {
                    handler = handlers[i];
                    if (handler &amp;&amp; (!context || handler.context === context)
                        &amp;&amp; (listener == null || handler.listener === listener)
                        &amp;&amp; (!onceOnly || <span class="branch-6 cbranch-no" title="branch not covered" >handler.once)</span>) {
                        endIndex = handlers.length - 1;
                        if (i !== endIndex) {
                            handler = handlers[endIndex];
                            handlers[endIndex] = handlers[i];
                            handlers[i] = handler;
                        }
                        this._recoverHandler(handlers.pop());
&nbsp;
                    }
                }
                if (!handlers.length) {
                    handlerMap[key] = undefined;
                }
                // let count: number = 0;
                // for (let i: number = 0; i &lt; handlers.length; i++) {
                //     const item: IListenerHandler&lt;KeyType&gt; = handlers[i];
                //     if (!item) {
                //         count++;
                //         continue;
                //     }
                //     if (item &amp;&amp; (!context || item.context === context)
                //         &amp;&amp; (listener == null || item.listener === listener)
                //         &amp;&amp; (!onceOnly || item.once)) {
                //         count++;
                //         handlers[i] = undefined;
                //     }
                // }
                // //如果全部移除，则删除索引
                // if (count === handlers.length) {
                //     handlerMap[key] = undefined;
                // } else {
                //     const newHandlers: IListenerHandler&lt;KeyType&gt;[] = [];
                //     for (let i = 0; i &lt; handlers.length; i++) {
                //         handlers[i] &amp;&amp; newHandlers.push(handlers[i]);
                //     }
                //     handlerMap[key] = newHandlers;
                // }
            }
        }
&nbsp;
        return this;
    }
    //广播
    /**
     * 广播
     * @param key 事件名
     * @param value 数据
     * @param callback 回调
     * @param persistence 是否持久化数据
     */
    public broadcast&lt;keyType extends keyof MsgKeyType = any&gt;(
        key: keyType, value?: ValueType[broadcast.ToAnyIndexKey&lt;keyType, ValueType&gt;],
        callback?: broadcast.ResultCallBack&lt;ResultType[broadcast.ToAnyIndexKey&lt;keyType, ResultType&gt;]&gt;,
        persistence?: boolean) {
        const handlerMap = this._handlerMap;
        if (!handlerMap) return;
        const handlers = handlerMap[key];
        if (persistence) {
            let valueMap = this._valueMap;
            <span class="missing-if-branch" title="if path not taken" >I</span>if (!valueMap) {
<span class="cstat-no" title="statement not covered" >                valueMap = {} as any;</span>
<span class="cstat-no" title="statement not covered" >                this._valueMap = valueMap;</span>
            }
            valueMap[key] = value;
        }
        if (!handlers) return;
        <span class="missing-if-branch" title="else path not taken" >E</span>if (!this._isArr(handlers)) {
            const handler = handlers as broadcast.IListenerHandler;
            value ? Broadcast._runHandlerWithData(handler, value, callback) : <span class="branch-1 cbranch-no" title="branch not covered" >Broadcast._runHandler(handler, callback);</span>
            if (handler.once) {
                this._recoverHandler(handler);
                this._handlerMap[key] = undefined;
            }
        } else {
            const handlerArr = <span class="cstat-no" title="statement not covered" >handlers as broadcast.IListenerHandler[];</span>
            let handler<span class="cstat-no" title="statement not covered" >: broadcast.IListenerHandler;</span>
            let endIndex = <span class="cstat-no" title="statement not covered" >handlerArr.length - 1;</span>
<span class="cstat-no" title="statement not covered" >            for (let i = <span class="cstat-no" title="statement not covered" >endIndex;</span> i &gt;= 0; i--) {</span>
<span class="cstat-no" title="statement not covered" >                handler = handlerArr[i];</span>
<span class="cstat-no" title="statement not covered" >                value ? Broadcast._runHandlerWithData(handler, value, callback) : Broadcast._runHandler(handler, callback);</span>
<span class="cstat-no" title="statement not covered" >                if (handler.once) {</span>
<span class="cstat-no" title="statement not covered" >                    endIndex = handlerArr.length - 1;</span>
<span class="cstat-no" title="statement not covered" >                    handler = handlerArr[endIndex];</span>
<span class="cstat-no" title="statement not covered" >                    handlerArr[endIndex] = handlerArr[i];</span>
<span class="cstat-no" title="statement not covered" >                    handlerArr[i] = handler;</span>
<span class="cstat-no" title="statement not covered" >                    this._recoverHandler(handlerArr.pop());</span>
                }
            }
<span class="cstat-no" title="statement not covered" >            if (!handlerArr.length) {</span>
<span class="cstat-no" title="statement not covered" >                this._handlerMap[key] = undefined;</span>
            }
        }
    }
    /**
     * 广播一条 指定 [key] 的粘性消息
     * 如果广播系统中没有注册该类型的接收者，本条信息将被滞留在系统中。一旦有该类型接收者被注册，本条消息将会被立即发送给接收者
     * 如果系统中已经注册有该类型的接收者，本条消息将会被立即发送给接收者。
     * 
     * @param key 消息类型
     * @param value 消息携带的数据。可以是任意类型或是null
     * @param callback 能够收到接收器返回的消息
     * @param persistence 是否持久化消息类型。持久化的消息可以在任意时刻通过 broadcast.value(key) 获取当前消息的数据包。默认情况下，未持久化的消息类型在没有接收者的时候会被移除，而持久化的消息类型则不会。开发者可以通过 [clear] 函数来移除持久化的消息类型。
     */
    public stickyBroadcast&lt;keyType extends keyof MsgKeyType = any&gt;(
        key: keyType,
        value?: ValueType[broadcast.ToAnyIndexKey&lt;keyType, ValueType&gt;],
        callback?: broadcast.ResultCallBack&lt;ResultType[broadcast.ToAnyIndexKey&lt;keyType, ResultType&gt;]&gt;,
        persistence?: boolean
    ) {
        <span class="missing-if-branch" title="if path not taken" >I</span>if (this._isStringNull(key)) <span class="cstat-no" title="statement not covered" >return;</span>
        const handlerMap = this._handlerMap;
        <span class="missing-if-branch" title="if path not taken" >I</span>if (handlerMap &amp;&amp; <span class="branch-1 cbranch-no" title="branch not covered" >handlerMap[key])</span> {
<span class="cstat-no" title="statement not covered" >            this.broadcast(key, value, callback, persistence);</span>
        } else {
            let stickyMap = this._stickHandlersMap;
            <span class="missing-if-branch" title="else path not taken" >E</span>if (!stickyMap) {
                stickyMap = {} as any;
                this._stickHandlersMap = stickyMap;
            }
            const stickyHandlers = stickyMap[key];
            const handler: broadcast.IStickyHandler = {
                key: key as any,
                value: value,
                callback: callback,
                persistence: persistence
            };
            <span class="missing-if-branch" title="else path not taken" >E</span>if (!stickyHandlers) {
                stickyMap[key] = [handler]
            } else {
<span class="cstat-no" title="statement not covered" >                stickyHandlers.push(handler)</span>
            }
        }
    }
    /**
     * 字符串是否为空 undefined null ""
     * @param str 
     */
    protected _isStringNull(str: string | any) {
        return !str || str.trim() === "";
    }
    /**
     * 是否是数组
     * @param target 
     */
    protected _isArr(target: any) {
        return Object.prototype.toString.call(target) === "[object Array]";
    }
    /**
     * 将广播的数据作为参数，执行广播监听器的逻辑
     * @param handler 广播监听器
     * @param data 广播的消息数据
     */
    protected static _runHandlerWithData(handler: broadcast.IListenerHandler, data: any, callback: broadcast.Listener) {
        <span class="missing-if-branch" title="if path not taken" >I</span>if (handler.listener == null) <span class="cstat-no" title="statement not covered" >return null;</span>
        let result: any;
        <span class="missing-if-branch" title="if path not taken" >I</span>if (data == null) {
            const args = <span class="cstat-no" title="statement not covered" >handler.args ? handler.args.unshift(callback) : [callback];</span>
<span class="cstat-no" title="statement not covered" >            result = handler.listener.apply(handler.context, args);</span>
        }
        else if (!handler.args &amp;&amp; !data.unshift) result = handler.listener.apply(handler.context, [data, callback]);
        else <span class="missing-if-branch" title="else path not taken" >E</span>if (handler.args) result = handler.listener.apply(handler.context, [data, callback].concat(handler.args));
        else <span class="cstat-no" title="statement not covered" >result = handler.listener.apply(handler.context, [data, callback]);</span>
        return result;
    }
    /**
     * 执行广播监听者的逻辑
     * @param handler 
     */
<span class="fstat-no" title="function not covered" >    protected static _</span>runHandler(handler: broadcast.IListenerHandler, callback: broadcast.Listener) {
<span class="cstat-no" title="statement not covered" >        if (handler.listener == null) <span class="cstat-no" title="statement not covered" >return null;</span></span>
        const args = <span class="cstat-no" title="statement not covered" >handler.args ? handler.args.unshift(callback) : [callback];</span>
        const result: any = <span class="cstat-no" title="statement not covered" >handler.listener.apply(handler.context, args);</span>
<span class="cstat-no" title="statement not covered" >        return result;</span>
    }
    /**
     * 回收handler
     * @param handler 
     */
    protected _recoverHandler(handler: broadcast.IListenerHandler) {
        handler.args = undefined;
        handler.context = undefined;
        handler.listener = undefined;
        handler.key = undefined;
        this._unuseHandlers.push(handler);
    }
    /**
     * 获取handler
     * @param key 
     * @param listener 
     * @param context 
     * @param once 
     * @param args 
     */
    protected _getHandler(key: string, listener: any, context: any, once: boolean, args: any[]) {
        const unuseHandlers = this._unuseHandlers;
        let handler: broadcast.IListenerHandler;
        <span class="missing-if-branch" title="if path not taken" >I</span>if (unuseHandlers.length) {
<span class="cstat-no" title="statement not covered" >            handler = unuseHandlers.pop();</span>
        } else {
            handler = {} as any;
        }
        handler.key = key;
        handler.listener = listener;
        handler.context = context;
        handler.once = once;
        handler.args = args;
        return handler;
    }
    /**
     * 添加广播监听
     * 如果是监听1次，则会移除上一次相同的监听
     * 会判断是否有粘性广播，如果有就会触发广播
     * @param handler 
     */
    protected _addHandler(handler: broadcast.IListenerHandler) {
        let handlerMap = this._handlerMap;
        if (handler.once) {
            this.off(handler.key, handler.listener, handler.context, handler.once);
        }
        if (!handlerMap) {
            handlerMap = {} as any;
            this._handlerMap = handlerMap;
        }
        const events = handlerMap[handler.key];
        if (events) {
            if (this._isArr(events)) {
                (events as broadcast.IListenerHandler[]).push(handler);
            } else {
                handlerMap[handler.key] = [events as any, handler];
            }
        } else {
            handlerMap[handler.key] = handler;
        }
        const stickyMap = this._stickHandlersMap;
        if (stickyMap) {
            const stickyHandlers = stickyMap[handler.key];
            <span class="missing-if-branch" title="else path not taken" >E</span>if (stickyHandlers) {
                let handler: broadcast.IStickyHandler;
                for (let i = 0; i &lt; stickyHandlers.length; i++) {
                    handler = stickyHandlers[i];
                    this.broadcast(handler.key as any, handler.value, handler.callback, handler.persistence);
                }
                stickyMap[handler.key] = undefined;
            }
        }
        if (handler.key !== this.keys.onListenerOn) {
            this.broadcast(this.keys.onListenerOn, handler.key);
        }
&nbsp;
    }
    /**
     * 取值
     * @param key 
     */
    public value&lt;keyType extends keyof MsgKeyType = any&gt;(key: keyType): ValueType[broadcast.ToAnyIndexKey&lt;keyType, ValueType&gt;] {
        return this._valueMap &amp;&amp; this._valueMap[key];
    }
    /**
     * 销毁广播系统
     */
<span class="fstat-no" title="function not covered" >    public d</span>ispose() {
<span class="cstat-no" title="statement not covered" >        this._handlerMap = undefined;</span>
<span class="cstat-no" title="statement not covered" >        this._stickHandlersMap = undefined;</span>
<span class="cstat-no" title="statement not covered" >        this._valueMap = undefined;</span>
    }
&nbsp;
}</pre></td></tr></table></pre>

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